What does "LTC" stand for in a substation?

LTC stands for Load Tap Changer. In substations, a Load Tap Changer is an important device used to regulate voltage levels. It allows for the adjustment of the transformer’s output voltage and helps to maintain a stable voltage supply despite fluctuations in load demand. This is crucial for ensuring that the electrical system operates efficiently and reliably, as it can accommodate varying power requirements without compromising performance.

The Load Tap Changer functions by altering the turns ratio of the transformer, which effectively changes the voltage level delivered to the distribution system. It can be operated either manually or automatically, with modern systems often using automatic controls to respond to real-time changes in load.

This answer reflects the fundamental role that Load Tap Changers play in maintaining voltage stability and quality in power systems, which is vital for the safe and effective distribution of electricity within a substation and beyond.